Home / 386,779,421.40-580,169,132.10-310,251,917.40

Finding the Fourth Proportional to 386,779,421.40, 580,169,132.10 and 310,251,917.40

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Solution

The fourth proportional to 386,779,421.40, 580,169,132.10 and 310,251,917.40 is: 465,377,876.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,779,421.40 : 580,169,132.10 = 310,251,917.40 : x
  2. Step 2: Convert to fraction form
    386,779,421.40/580,169,132.10 = 310,251,917.40/x
  3. Step 3: Cross multiply
    386,779,421.40x = 580,169,132.10 × 310,251,917.40
  4. Step 4: Simplify right side
    386,779,421.40x = 179,998,585,650,318,880
  5. Step 5: Solve for x
    x = 179,998,585,650,318,880/386,779,421.40
  6. Step 6: Final answer
    x = 465,377,876.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.